Numbers congruent to 3 in the structure (or curve) of A211000.

Terms

a(0) =3a(1) =15a(2) =31a(3) =35a(4) =43a(5) =47a(6) =51a(7) =151a(8) =155a(9) =175a(10) =179a(11) =243a(12) =247a(13) =251a(14) =255a(15) =339a(16) =343a(17) =347a(18) =355a(19) =359a(20) =363a(21) =367a(22) =371a(23) =391a(24) =395a(25) =403a(26) =407a(27) =6571a(28) =6575a(29) =6583